Efficient and energy-saving air source heat pump

Abstract

The invention provides an efficient and energy-saving air source heat pump. The efficient and energy-saving air source heat pump comprises a refrigerant compression device, an integrated heat supply unit and an energy-saving module, wherein the outlet of the refrigerant compression device communicates with the inlet of the integrated heat supply unit; the energy-saving module comprises a first energy-saving module and a second energy-saving module arranged in parallel; the first energy-saving module comprises a first heat exchanger and a first control module which are arranged in series; the outlet of the first heat exchanger communicates with the inlet of the refrigerant compression device; the inlet of the first heat exchanger communicates with the outlet of the integrated heat supply unit through the first control module; the second energy-saving module comprises a second heat exchanger and a second control module which are arranged in series; the outlet of the second heat exchangercommunicates with the inlet of the refrigerant compression device; the inlet of the second heat exchanger communicates with the outlet of the integrated heat supply unit through the second control module; and the first control module and the second control module are configured to control the first heat exchanger and the second heat exchanger to alternatively perform defrosting. The efficient andenergy-saving air source heat pump can avoid the stop of system heating and the high-pressure risk of the refrigerant compression device.

Description

technical field [0001] The invention relates to the field of air source heat pumps, in particular to a high-efficiency and energy-saving air source heat pump. Background technique [0002] The air source heat pump is an energy-saving device that uses high-level energy to make heat flow from low-level heat source air to high-level heat source. It is a form of heat pump. As the name implies, a heat pump is like a pump, which can convert low-level thermal energy that cannot be directly used (such as the heat contained in air, soil, and water) into high-level thermal energy that can be used, thereby saving some high-level energy (such as coal, gas, oil, etc.) , electricity, etc.) purpose. [0003] When the existing air source heat pump system continuously supplies heat in winter, when it is in the defrosting mode, the four-way valve reversing system has the problem of intermittent heat supply and high load. The specific reason is that the plate-fin combined heat exchanger in w...

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Problems solved by technology

[0003] When the existing air source heat pump system continuously supplies heat in winter, when it is in the defrosting mode, the four-way valve reversing system has the problem of intermittent heat supply and high load. The specific reason is that the plate-fin combined heat exchanger in winter When the temperature is below zero and the high-load heating mode is running, the fins of the plate-fin combined heat exchanger are likely to be covered by a frost layer, which reduces the heat transfer capacity of the plate-fin combined heat exchanger and seriously affects the working efficiency of the heat pump unit.

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